Pebble pillow



FIG. 1 is a top plan view of the present invention showing the applicant's new design;

FIG. 2 is a front side view thereof;

FIG. 3 is a bottom plan view thereof; and,

FIG. 4 is right side view thereof.

The broken lines making up the inner feature of the design is unclaimed subject matter. 

The ornamental design for a pebble pillow, as shown and described. 